+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7893 (1994 XY) Classification: Main-belt Asteroid          SPK-ID: 2007893 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1342717303838004 9.2872e-08   a 2.281512181140981 1.5787e-08 AU q 1.975169592687463 2.1329e-07 AU i 7.316001084376696 6.864e-06 deg node 91.84370748487173 7.2817e-05 deg peri 270.0456264870856 7.7143e-05 deg M 171.074772053863 2.6843e-05 deg tp 2455802.341768159041 (2011-Aug-28.84176816) 9.3e-05 JED period 1258.730091395044 3.45 1.3065e-05 3.577e-08 d yr n .2860025373676527 2.9685e-09 deg/d Q 2.587854769594499 1.7907e-08 AU   Orbit Determination Parameters    # obs. used (total)      754      data-arc span      21145 days (57.89 yr)      first obs. used      1955-05-22      last obs. used      2013-04-12      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .61152      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:28:37   Additional Information  Earth MOID = .988103 AU   T_jup = 3.582  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.2 mag n/a PDS3 (MPC 30643)   7893 (1994 XY)          Discovered 1994-Dec-02 by Shimizu, Y., Urata, T. at Nachi-Katsuura Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 01:58 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin